Finding the Fourth Proportional to 1,097.52, 1,644.64 and 1,070.34

Step by Step Solution

1. Step 1: Write the proportion equation
   1,097.52 : 1,644.64 = 1,070.34 : x
2. Step 2: Convert to fraction form
   1,097.52/1,644.64 = 1,070.34/x
3. Step 3: Cross multiply
   1,097.52x = 1,644.64 × 1,070.34
4. Step 4: Simplify right side
   1,097.52x = 1,760,323.98
5. Step 5: Solve for x
   x = 1,760,323.98/1,097.52
6. Step 6: Final answer
   x = 1,603.91